Charles l



"UNITED CHARLES L. CR'UllCI, OF INCHESTER, VIRGINIA IMPROVEMENT IN PAPER-MACHINES.

Specification forming part of Letters Patent No. 164$ Ml, dated June 22, 1875 application filed May 19, 1875.

To all whom it may concern:

Be it known that I, UHARLES L. (hum, of Vlinchester, in the county of Frederick and State of Virginia, have invented a new and IIUDIOYBd Paper-Machine; and I do hereby declare that the following is a full, clear, and exact description of the same, reference being had to the accompanying drawing ibrmiug a part of this specification, in which the figure is a side elevation.

The object of my invention is to better adapt what is generally known as the Fourdrinier paper-machine to making heavy paper or boards out of straw, wood, or other material.

In the drawing, the frame A, rolls dcckle G, suction-box B, and wire E represent parts of the paper-machine as usually constructed. I erect upon, and attach to, the frame A the frame J, to which is attached the rolls X X X X X, and X one of which can be made adjust-able as a guide-roll, and another as a stretchroll, to carry the endless wire-cloth H, which is put in motion and run in the direction of the arrow by means of a belt and pulley on a shaft connected with one or more of the above-named rolls.

A shower-pipe and box to catch the water may be attached to the frame J to wash out an y particles of pulp that may adhere to the wire or the same object can be attained by a doctor attached to one of the rolls.

The wire H runs with, and at the same speed as, the wire-cloth E.

G represents a suction-box, having a perforated bottom, and resting upon the wire H,

and pressing slightly upon the pulp as it passes between the wires I l and 1:1.

A vacuum is created in the box G a sue tion-pump or siphon, 1n the usual manner.

The small rolls X and X are to guide the wire under the box G, which may be made adjustable to the thickness of the pulp or paper by means of set-screws, connecting atlan go or projection on the end of the box with the frame A.

It is best to have the suction-box provided with a small air'cocl; for regulating the suction. 1

The operation of my im -ntion is as follows: As the pulp is carried along upon the wirecloth E, the web is first lbrmed upon the under side next to the wire and it is with great difliculty that enough water can be drawn through the web to the under side. I therefore pass the pulp or Web over the suct-ionbox, as represented by B, and extract all the water that can be extracted to advantage through the wire E on the under side. I then pass it under the suction-box G with upper wirecloth H between, and extract an additional quantity of water from the upper or top side of the pulp. It is then passed in the usual way through the couchers' and presses to the driers.

Having thus described my invention, what I claim as new is- 1. The combination of the second upper wire-cloth H and suction-box G with the Fourdrinier machine, substantially as described.

2. The combination of the second upper wire-cloth H, box G, rolls X X X X X, and X with the Fourdrinicr, nhstantially as described.

OHARLlYlEZ ll, GRUllL 'Witncsses PHILIP W. BOYD, G. W. Bowrrc 

